diff --git a/src/modules/textopsx/doc/textopsx.xml b/src/modules/textopsx/doc/textopsx.xml
index b7fe0d14a81..1967229ac11 100644
--- a/src/modules/textopsx/doc/textopsx.xml
+++ b/src/modules/textopsx/doc/textopsx.xml
@@ -37,6 +37,11 @@
 		in routing block configurations.
 		It adds new features similar to the textops module (textops eXtentions).
 	</para>
+	<para>
+		Note: If you add or remove message parts (header, body etc..) it
+		may be required to execute msg_apply_changes() from this module
+		if there are other operations done on the SIP message later on.
+	</para>
     </section>
 
     <xi:include href="functions.xml"/>